Pure Sol

Well sports fans its another B16 idle problem. This time its not your typical hunting situation. Starts up just fine idles perfect, drive it a little and it dips down to almost nothing and comes back up to around 500. Cleaned idle air control, and FITV, adjusted screw on FITV. Tried to set idle and no matter how far i screw the idle adjustment out it won't go above 500. Anyone have any ideas???